feat: add addKey method to QIconifyIcon (#218)

* feat: addKey method to Iconify

* style: [pre-commit.ci] auto fixes [...]

* remove breakpoint

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/superqt/iconify/__init__.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 from typing import TYPE_CHECKING
 
+from qtpy.QtCore import QSize
 from qtpy.QtGui import QIcon
 
 if TYPE_CHECKING:
@@ -10,6 +11,11 @@ if TYPE_CHECKING:
     Flip = Literal["horizontal", "vertical", "horizontal,vertical"]
     Rotation = Literal["90", "180", "270", 90, 180, 270, "-90", 1, 2, 3]
 
+try:
+    from pyconify import svg_path
+except ModuleNotFoundError:  # pragma: no cover
+    svg_path = None
+
 
 class QIconifyIcon(QIcon):
     """QIcon backed by an iconify icon.
@@ -27,6 +33,9 @@ class QIconifyIcon(QIcon):
     SVGs are cached to disk, and persist across sessions (until `pyconify.clear_cache()`
     is called).
 
+    Parameters are the same as `QIconifyIcon.addKey`, which can be used to add
+    additional icons for various modes and states to the same QIcon.
+
     Parameters
     ----------
     *key: str
@@ -63,21 +72,55 @@ class QIconifyIcon(QIcon):
         rotate: Rotation | None = None,
         dir: str | None = None,
     ):
-        try:
-            from pyconify import svg_path
-        except ModuleNotFoundError as e:  # pragma: no cover
-            raise ImportError(
+        if svg_path is None:  # pragma: no cover
+            raise ModuleNotFoundError(
                 "pyconify is required to use QIconifyIcon. "
                 "Please install it with `pip install pyconify` or use the "
                 "`pip install superqt[iconify]` extra."
-            ) from e
-        if len(key) == 1:
-            self._name = key[0]
-        else:
-            self._name = ":".join(key)
-        self.path = svg_path(*key, color=color, flip=flip, rotate=rotate, dir=dir)
-        super().__init__(str(self.path))
+            )
+        super().__init__()
+        self.addKey(*key, color=color, flip=flip, rotate=rotate, dir=dir)
 
-    def name(self) -> str:
-        """Return the iconify `prefix:icon` represented by this QIcon."""
-        return self._name
+    def addKey(
+        self,
+        *key: str,
+        color: str | None = None,
+        flip: Flip | None = None,
+        rotate: Rotation | None = None,
+        dir: str | None = None,
+        size: QSize | None = None,
+        mode: QIcon.Mode = QIcon.Mode.Normal,
+        state: QIcon.State = QIcon.State.Off,
+    ) -> None:
+        """Add an icon to this QIcon.
+
+        This is a variant of `QIcon.addFile` that uses an iconify icon keys and
+        arguments instead of a file path.
+
+        Parameters
+        ----------
+        *key: str
+            Icon set prefix and name. May be passed as a single string in the format
+            `"prefix:name"` or as two separate strings: `'prefix', 'name'`.
+        color : str, optional
+            Icon color. If not provided, the icon will appear black (the icon fill color
+            will be set to the string "currentColor").
+        flip : str, optional
+            Flip icon.  Must be one of "horizontal", "vertical", "horizontal,vertical"
+        rotate : str | int, optional
+            Rotate icon. Must be one of 0, 90, 180, 270, or 0, 1, 2, 3 (equivalent to 0,
+            90, 180, 270, respectively)
+        dir : str, optional
+            If 'dir' is not None, the file will be created in that directory, otherwise
+            a default
+            [directory](https://docs.python.org/3/library/tempfile.html#tempfile.mkstemp)
+            is used.
+        size : QSize, optional
+            Size specified for the icon, passed to `QIcon.addFile`.
+        mode : QIcon.Mode, optional
+            Mode specified for the icon, passed to `QIcon.addFile`.
+        state : QIcon.State, optional
+            State specified for the icon, passed to `QIcon.addFile`.
+        """
+        path = svg_path(*key, color=color, flip=flip, rotate=rotate, dir=dir)
+        self.addFile(str(path), size or QSize(), mode, state)

tests/test_iconify.py

@@ -1,6 +1,7 @@
 from typing import TYPE_CHECKING
 
 import pytest
+from qtpy.QtGui import QIcon
 from qtpy.QtWidgets import QPushButton
 
 from superqt import QIconifyIcon
@@ -13,9 +14,8 @@ def test_qiconify(qtbot: "QtBot", monkeypatch: "pytest.MonkeyPatch") -> None:
     monkeypatch.setenv("PYCONIFY_CACHE", "0")
     pytest.importorskip("pyconify")
 
-    icon = QIconifyIcon("bi:alarm-fill", color="red", rotate=90)
-    assert icon.path.name.endswith(".svg")
-    assert icon.name() == "bi:alarm-fill"
+    icon = QIconifyIcon("bi:alarm-fill", color="red", flip="vertical")
+    icon.addKey("bi:alarm", color="blue", rotate=90, state=QIcon.State.On)
 
     btn = QPushButton()
     qtbot.addWidget(btn)